Using innovative technologies, like Progressive Flow and Smart Controllers, your process equipment accesses the highest-quality water on the market to protect your biggest investments and safeguard your operations.
High Efficiency
Simply stated – Automatic backwashing filters are those that are able to reverse flow of water through the media to clean, regenerate, re-stratify or refresh themselves.
Backwashing filters have a long service life, are very dependable, and have many of the same components as salt softeners. They have media (often called the filter bed), a media tank, and a filter control valve. Since they don’t use ion exchange they don’t have a brine or salt tank.
The filter control valve sits on top of the media tank and automatically directs flow of water through the media and tank.
Most backwash filters pass untreated water during the backwash and rapid rinse cycles. Because of this, water used while the filter is backwashing or rinsing is untreated. This is typically called “hard water bypass” and has to do with fire code. Imagine what would happen if there was a fire but no water to put it out because the backwash filter was busy cleaning itself?
Because some jobs require treated water 24/7 thought has to be given in the design to provide treated water during the backwash cycle. There are ways to make sure that happens. The most common are:
During the service cycle water is treated by one or more processes. Processes include; separation, adsorption, and addition of sacrificial media to the water each having its specific place and purpose in treatment. Many backwashing filters are specialized, designed to treat one water quality problem. A “filtration system” may have more than one filter, think multiple filters for multiple problems.
During the service cycle contaminants are filtered from the water as it flows through the media bed from the top to the bottom of the filter tank. If the filter did not have a mechanism for cleaning itself it would, over time, foul, plug up or otherwise stop working and fail. To prevent this from happening the control valve periodically directs the flow of water to clean the filter bed after which the filter is returned to service. This filter cleaning process is known as “backwashing” or “regenerating”.
During the backwash cycle water flows in reverse from the service flow, water flows from the bottom of the filter bed to the top lifting the media and separating the filtered contaminants which flow out of the control valve to drain. Following the backwash cycle is the rapid rinse cycle. During the rapid rinse cycle water again flows from the top to the bottom of the media bed. This is the same direction as the service flow, but the water is directed to the drain. The rapid rinse cycle serves two primary purposes; it re-packs the media bed and cleans leftover contaminants from the bottom of the bed. Once the rapid rinse cycle finishes the control valve places the filter back into the service mode.
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This high quality, granular media is produced from a unique mineral deposit that has high surface area and porosity, making this media preferred over conventional sand. The surface of this media features microscopic minerals that allow particulate matter to penetrate deeply into the bed.
Chlorine and slight sulfur odors can often be removed by a carbon filter unit. However, when odors are extreme, your water treatment professional may recommend a chemical feed system to help increase the life of a carbon unit. In such installations, this series of filters will effectively remove taste and odor associated with chlorine and sulfur.
Ideal for treating acidic waters that can corrode a plumbing system.
